发布人:繁体字网(www.fantiz5.com) 发布时间:2015-10-24 07:30:00
试题原文 |
|
①4.68+14.79+5.32-10.79, =(4.68+5.32)+(14.79-10.79), =10+4, =14; ②2.5×(6.8+6.8+6.8+6.8), =2.5×(6.8×4), =2.5×6.8×4, =(2.5×4)×6.8, =10×6.8, =68; ③475+238-147×3, =475+238-441, =713-441, =272; ④49.8+42÷15×4.5, =49.8+2.8×4.5, =49.8+12.6, =62.4; ⑤0.5×[21.2÷(4.5+80%)], =0.5×[21.2÷5.3], =0.5×4, =2; ⑥[(
=[
=
=
|
经过对同学们试题原文答题和答案批改分析后,可以看出该题目“用递等式计算(能简算的请简算)①4.68+14.79+5.32-10.79②2.5×..”的主要目的是检查您对于考点“小学运算定律和简便算法”相关知识的理解。有关该知识点的概要说明可查看:“小学运算定律和简便算法”。